Parallel-lay Steel Wire Rope

Parallel Lay Steel Wire Rope manufactured by Aogang is built for large-diameter, heavy-duty lifting and hoisting projects where fatigue resistance and long-term structural stability matter more than price alone. In this construction, the outer strand layers and the rope core are laid in the same (parallel) direction, reducing internal contact stress between layers compared with conventional cross-lay multi-strand rope.

Common Structures of Parallel Lay Steel Wire Rope

Main spot goods structures: 6×19S, 6×19W, 6×26WS, 6×31WS, 6×36WS, 6×41WS, 8×19S, 8×36WS, 6×25Fi, 6×29Fi

(Note: S is Seale type, W is Warrington type, Fi is Filler type, the three major line contact structures, with uniform lay length in the same layer, belonging to parallel twisting process.)

Structural Advantages of Parallel Lay Steel Wire Rope

• Parallel (same-direction) lay between core and outer strands reduces inter-layer friction

• More even load distribution across strand layers, lowering localized wear points

• Higher fatigue resistance under repeated heavy loading cycles

• Better flexibility for large-diameter rope compared to cross-lay construction

• Longer service life on high-cycle equipment such as mine hoists and drilling winches

Parallel Lay Steel Wire Rope Basic Parameters

Diameter range: Φ6–Φ60mm, all specifications can be customized as needed, non-standard sizes can be processed

Tensile strength: 1570MPa, 1770MPa, 1960MPa, 2160MPa

Mechanical properties: The sum of minimum breaking force complies with current national standards, with load-bearing safety

Surface process: Bright, hot-dip galvanized/electro-galvanized optional, suitable for indoor dry and outdoor corrosive working conditions

Supporting rope cores: FC fiber core and IWRC independent steel core two categories, can be selected as needed

Executive standards: GB/T 20118-2025, GB 33955-2024, GB/T 8918-2006

Parallel Lay Steel Wire Rope Performance Advantages

• Line-like pressure bearing, extremely small wire contact stress, uniform wear of the whole rope, not easy to have single-point wear and wire breakage, service life far exceeds conventional point contact steel wire rope.

• High rope body compactness, large effective metal cross-sectional area, high breaking force, suitable for high-frequency reciprocating bending operations of pulleys, with excellent fatigue resistance.

• Outstanding comprehensive performance, strong resistance to bending, extrusion and deformation, tight overall structure, smooth hoisting operation, and strong ability to buffer and absorb impact loads.

• Good protective sealing, outer layer thickened steel wire strengthens surface wear resistance, tight strand fitting, water vapor and mud impurities are not easy to penetrate into the rope core, with stronger corrosion resistance and durability.

  
  

Applications of Parallel Lay Steel Wire Rope

• Mining shaft hoisting and winding systems

• Deep-well drilling rigs and oilfield lifting equipment

• Large gantry cranes, ship unloaders, and port handling machinery

• Heavy engineering structures and marine mooring requiring high breaking load

Packaging, Logistics and Delivery

Customized Packaging

Packaging is customized according to rope diameter, order length and transportation conditions: standard wooden reels, iron-wood reels, and iron reels; internally wrapped with special moisture-proof and rust-proof paper, and fully covered with PE waterproof film on the outer layer, providing all-round protection against transportation collision, rope body deformation, and moisture and rust.

Global Logistics

Building a national trunk distribution network, supporting global shipment at home and abroad, mainstream spot specifications are shipped within 24 hours after quick ordering, with efficient and stable delivery.

Delivery Service

Supports customization of rope diameter, lay direction, rope core, coating, length, etc. as needed. The laboratory can issue special test reports. Production and quality inspection are carried out strictly according to contract parameters, with compliant delivery and after-sales full working condition selection guidance.

Aogang's Engineering & Production Capability

• In-house strand-forming and rope-closing lines sized for large-diameter, project-grade orders

• Custom lay direction, length, and lubrication design based on client drawings/specs

• Full-length breaking load and dimensional testing before shipment

• Technical support for rope selection matched to sheave/drum size and duty cycle

• Export packaging on wooden or steel reels sized for sea/land freight